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• How to handle localization in javascript files?

  - by Arnis L.

  I want javascript to be separated from views. Got requirement to implement localization for simple image button generated by JS: <img src="..." onclick="..." title="Close" /> What's the best technique to localize title of it? P.s. Found a solution by Ayende. This is the right direction. Edit: I got Localization helper class which provides Controller.Resource('foo') extension method. Thinking about to extend it (helper) so it could return all JavaScript resources (from "ClientSideResources" subfolder in App_LocalResources) for specified controller by it's name. Then - call it in BaseController, add it to ViewData and render it in Layout. Would that be a good idea?

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• Test whether image loaded correctly with JavaScript

  - by johkar

  I have an image deployed on several application servers (green up arrow: uparrow.gif). I have an application server status page where I list out all the servers and with a corresponding image where the image's source is the uparrow.gif for that server. If the image does not load (server down) I would like to switch to a red down arrow (downarrow.gif). Is there a way to check whether an image loaded or not with straight JavaScript (no JS libraries etc)? I would imagine I would set an interval for it to continue checking if the user were on the page. Thanks.

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• javascript ajax variable question..

  - by Kelso

  Hey there, new to AJAX, JS.. Im trying to add to a Javascript/Ajax search script that I've put together. Previously, it had a single search field, called search_word, I added one called search_date. $(".search_button").click(function() { var search_word = $("#search_box").val(); var search_date = $("#datepicker").val(); var dataString = 'search_word='+ search_word; if(search_word=='') { } else { $.ajax({ type: "GET", url: "searchdata.php", data: dataString, In the Ajax, it appears to pass data of dataString, to my processing script. How do I add search date to the dataString so that I can use that var in my searchdata.php? In searchdata, I can do this $search_word=$_GET['search_word']; and use that var, but so far every time i attempt to alter the dataString, it breaks all the other functionality. Thanks!

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• Separation of logic from presentation: HTTP variable names?

  - by Allan Jardine

  Hello all, This could probably be considered an academic question, rather than a real world one - but throwing it out to see if anyone has any great ideas! We all know that keeping the business logic of an application separate from the presentation is a good idea (I'm looking at web-apps atm), but there needs to be an understanding between the business logic for what HTTP variables to expect (and then process) and the variable names which are sent by the presentation layer. Is this simply a matter of telling the designer what variable names to use in a template? The template doesn't need to know what the variable names are (unless using them for JS/CSS selectors), so why should they be 'hardcoded' in there. Or should the business logic put the names into variables to be printed out? Another layer of complexity for the templates? Does anyone have any experience of this, or thoughts on how to deal with it? Thanks, Allan

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• .htaccess with public folder

  - by ninumedia

  I have a directory structure with the following on localhost: http://localhost/testing/ A directory structure exists inside of testing as follows: /testing/public /testing/public/index.php /testing/public/img /testing/public/css ..etc for the js and swf directories A .htaccess file is inside the testing folder and the contents are as follows: Options +FollowSymLinks RewriteEngine on RewriteBase /testing/ RewriteRule ^public$ public/ [R,QSA] RewriteRule ^public/$ public/index.php?state=public [L,QSA] RewriteRule ^stackoverflow$ stackoverflow/ [R,QSA] RewriteRule ^stackoverflow/$ public/index.php?state=stackoverflow[L,QSA] I am using PHP and inside of the /testing/public/index.php file I wanted to test that the $_GET['state'] is indeed saving the variable. When I try to test out: http://localhost/testing/public $_GET['state'] is not found at all BUT http://localhost/testing/stackoverflow does indeed echo out that $_GET['state'] equals 'stackoverflow'. What am I missing here??? Why is it that I cannot get the state=public in the first link? Thanks for the help!

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• Rails i18n and routes in javascript

  - by StefanS

  Sometimes it would be really handy to have the Rails localization files available in JavaScript. Same is true for for the routes helpers. I found these two plugins which are exactly doing this: Exposing i18n to JavaScript: http://github.com/fnando/i18n-js Rails Routes in JavaScript: http://tore.darell.no/pages/javascript_routes My questions: Are there any other plugins / gems doing similar things like the two above? What's the right approach in Rails? Meta tag? Additional data- attributes? Thanks for any input!

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• How to read directory using jQuery .ajax()?

  - by C.W.Holeman II

  Using jQuery .ajax() to read "./ex.html" returns the expected contents of the file. Using the same call just changing the request to "./" does not return an expected directory listing. <html> <head> </head> <body> <script type="text/JavaScript" src="jquery.js"></script> <script type="text/JavaScript"> alert($.ajax({type: "GET", url: './ex.html', async: false}).responseText); alert($.ajax({type: "GET", url: './', async: false}).responseText); </script> </body> </html>

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• asp:Menu Not working on webhost

  - by Brian

  I'm using Visual Studio Web Express 2008 to develop an ASP.Net website. I have a master page that every page inherits from and on that master page I have the asp:menu control. On my local machine the menu control works just fine. The javascript is emitted and the links work as well. However, when I upload it to my webhost service provider, the javascript is not emitted and my links do not work. I'm getting a feeling that my service provider really doesn't know much about .Net as they suggested that I make sure that I upload the .js files which isn't necessary. Does anyone have any suggestions that I can give them? They're asking me what requirements are needed. It seems to me that something is not setup on their server properly but according to them, they have .Net 3.5 SP1 installed.

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• Send jQuery array to PHP post?

  - by FFish

  I have a javascript function that gathers two arrays, imagepaths and captions. I want to send with PHP's post to the same page $_SERVER['PHP_SELF'], but I really don't know where to start.. PHP: if (isset($_POST['Submit'])) { $edit_photos->update_xml($edit_photos->album_id, $_POST['src_arr'], $_POST['caption_arr']); // prevent resending data header("Location: " . $_SERVER['PHP_SELF'] . "?ref=" . $ref); } JS: function getImgData() { var imgData = { 'src_arr': [], 'caption_arr': []}; $('.album img').each(function(index){ imgData.src_arr.push($(this).attr('src')); imgData.caption_arr.push($(this).attr('alt')); }); return imgData; }; HTML: <form name="form1" method="post" action="<?php echo $_SERVER['PHP_SELF'] . "?ref=" . $ref; ?>">

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• How to get value of a input field in Javascript

  - by gaurav.mishra280295

  I am using valums-file-uploader plugin. It allows me to upload files using ajax. I have a problem with it. I have the following script- <input type="text" id="Gaurav" name="Gaurav" /> <script src="fileuploader.js" type="text/javascript"></script> <script> function createUploader(){ var uploader = new qq.FileUploader({ element: document.getElementById('file'), action: 'do-nothing.php', params:{param: document.getElementById('Gaurav').value}, allowedExtensions: ['jpg', 'jpeg', 'png', 'gif'], minSizeLimit: 1, debug: false }); } // in your app create uploader as soon as the DOM is ready // dont wait for the window to load window.onload = createUploader; </script> In it, I want to set the value of param entered by the user. The code is working properly for default value of Gaurav, but didn't work for user inputted value.

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• How can I add methods from a Java class as global functions in Javascript using Rhino?

  - by gooli

  I have a simple Java class that has some methods: public class Utils { public void deal(String price, int amount) { // .... } public void bid(String price, int amount) { // .... } public void offer(String price, int amount) { // .... } } I would like to create an instance of this class and allow the Javascript code to call the methods directly, like so: deal("1.3736", 100000); bid("1.3735", 500000); The only way I could figure out for now was to use ScriptEngine engine = new ScriptEngineManager().getEngineByName("js"); engine.put("utils", new Utils()); and then use utils.deal(...) in the Javascript code. I can also write wrapper functions in Javascript for each method, but there should be a simpler way to do this automatically for all the public methods of a class.

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• Using argument (this) passed via element eventhandler

  - by Kel

  Hey guys, I want to use the argument I pass (this) in a JS function and treat it as an jQuery variable. Example: <script> function useMe(obj){ $(obj).val(); ... ... ... } </script> <select id="selectid" onChange="useMe(this)"> <option>......</option> </select> Is there a possibility to treat the passed argument as a jQuery element? Btw. I need to do it this way, because the select-element isn't created on load. The select element will be created later asynchronously. So, this won't work: $("select").each(function (i){ var select_id = $(this).attr("id"); $(this).change(function(e){ because it doesn't exist yet. Thanks for your help.

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• Storing DOM reference elements in a Javascript array

  - by webzide

  Dear experts, I was trying to dynamically generate DOM elements using JS. I read from Douglas Crockford's book that DOM is very very poorly structured. Anyways, I would like to create a number of DIVISION elements and store the reference into an array so it could be accessed later. Here's the code for(i=0;i<3;i++){ var div=document.body.appendChild(document.createElement("div")); var arr=new Array(); arr.push(div); } Somehow this would not work..... There is only 1 div element created. When I use the arr.length to test the code there is only 1 element in the array. Is there another way to accomplish this? Thanks in advance

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• How do I pre-empt IIS StaticFileHandler with my own HttpHandler

  - by Hmobius

  Hi there, I'm building a website referencing an assembly that contains several js scripts as embedded resources, some controls which use those scripts and a 'HttpResourcesHandler' that knows how to retrieve those embedded scripts when asked for them. In web.config I have an entry in the section that reads <add verb="*" path="/embedded/controlscripts/*" validate="false" type="CWeb.Controls.Web.HttpResourcesHandler, CWeb.Controls.EditBox" /> This control adn the website work absolutely fine when debugging with the Visual Studio web development server, but if I then switch the website to run under IIS (v7 - I'm running Vista and there appears to be no problem with debugging the site using IIS 5 or 6), the control can no longer access the scripts. I get a HTTP 404.0 error screen indicating the StaticFileHandler cannot find the file. I know that - it's embedded. So the StaticFileHandler appears to be grabbing the request for the script before my own and returning a 404. How do I tell IIS to use my own resource handler for the embedded/controlscripts directory rather than the staticfilehandler? I'm running the website in classic mode by the way.

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• Html string replace a span's class doesn't work in IE?

  - by SeanJA

  Someone tried to recreate smarty in js: // actually from a template file, not hardcoded in the javascript html = '<span class="{test}">yay</span>'; html = change(html, 'test', 'foo bar'); function change(html, key, value){ html = html.replace('{'+key+'}',value); html = html.replace('%7B'+key+'%7D',value); return html; } element.innerHTML = html; In FF this works fine (as expected): yay In IE 7/8 and probably 6... it gives me this: <span class="foo" bar="">yay</span> Why does it create the extra attribute instead of doing what I expected it to do?

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• Global variable life in Javascript - destroyed on a reload?

  - by Paul Nathan

  (I am learning Javascript) Problem: A page I am working on has 2 views, a data entry view with a textbox and a data rendering view. There is a a href src="currentpage#" link that switches between the 2 views. In order to transmit data from view to view, the javascript parses it from the current HTML and pushes it into the correct form for the other view. This is ugly and I want to refactor it out, ideally into some sort of global where it can be neatly rendered down into the view on command (I'm refactoring the code base to a point where I can AJAX it from a server). However, I am not certain about scoping rules and variable life in JS.

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• Choosing between ExtJS and YUI based of application parameters.

  - by Kabeer

  Hello. I need help in taking call to choose between Ext JS and YUI libraries. Here are the key factors I have derived from my application requirements & development process: Complex, windows forms like controls Widgets, Layouts, Utilities Inter widget communication Easy to extend Easy to learn Intuitive & concise coding Strong exception handling Active support / community To update with upcoming technologies (HTML5, etc.) Skins & Themes to be easy to change Skins & Themes to support variety (a text box for different context to appear differently) Support & Utilities for standard protocols (XmlHttp, JSON) Good performance (responsive) Cost is not crucial, but I don't mind saving :)

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• When is JavaScript's eval() not evil?

  - by Richard Turner

  I'm writing some JavaScript to parse user-entered functions (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result. However, I've always shied away from using eval() if I can avoid it because it's evil (and, rightly or wrongly, I've always thought it is even more evil in JavaScript because the code to be evaluated might be changed by the user). Obviously one has to use eval() to parse JSON (I presume that JS libraries use eval() for this somewhere, even if they run the JSON through a regex check first), but when else, other than when manipulating JSON, it is OK to use eval()?

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• Google chrome extension: local storage

  - by Rohan

  Hi there I'm developing an extension for Google Chrome, and have run into some trouble.I created an options.html page and added it to the manifest.json file.The page shows properly. I saved the options, and then went back to the page on which the extension is supposed to run. Unfortunately, the Local storage for the options was returning a 'null' instead of the option. If I set the local storage option directly from the extension's JS script, it works fine but not if it was set from the options page. Any idea how i can access the options.html local storage values from my Javascript file in the extension? thanks!

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• ASP.NET 3.5 C# : Combine images in one download

  - by Mark

  Hi All, I Would like to know if its possible to combine mulitple images in 1 download. On my homepage I'm showing 12 images which change depending on the country of the user. I notice this takes a lot of time to download for some users and i would like to know if it's possible to combine them into one download with an httphandler (in the way u can combina js and css) or even create 1 static image out of those 12. For an example check here link text Thanks for your time! Kind regards, Mark

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• Django: tinyMCE and cross site javascript

  - by pistacchio

  Hi, follow this question, I was able to set some textareas in my admin page as richtext inputs. The most voted answer suggests to follow an example and is what i did. Also, it talks about a problem concerning "blank pages". I'm having the same problem and I'm not able to solve it. I have my media files served by a different server, so MEDIA_URL points to a different host with a different port. To simulate this in my dev environment, I also serve media files from a different port. Debugging the failing javascript, Chrome yelds: Unsafe JavaScript attempt to access frame with URL http://localhost:8000/admin/blog/post/add/ from frame with URL http://localhost:88/s3mangerie/js/tiny_mce/themes/advanced/image.htm. Domains, protocols and ports must match. How to solve this problem? Thanks

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• infoWindow on MarkerClusterer

  - by vishwanath

  I need infoWindow to be opened instead of zooming in map, when clicking on the ClusterMarker. I am using Gmaps util library MarkerClusterer for creating cluster of markers. I tried changing following line in markerclusterer.js ClusterMarker_.prototype = new GOverlay(); with ClusterMarker_.prototype = new GMarker(); so that I can get the openInfoWindow() function in the clustermarker, but that didnt worked out. Got some error. If possible, Please suggest solution so that this can be done with MarkerClusterer. Or else any other library which will be able to do this. Any help will be appreciated.

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• javascript arrays: adding entries

  - by Lyon

  Hi, I'm not sure how I would do this in Javascript. I want to create an array that would contain any number of error messages from my form. I read on websites that you define the key for that array when adding new entries. // Javascript var messages = new Array(); messages[0] = 'Message 1'; How can I add entries into my array using a similar method I normally do in PHP // PHP $messages = array(); $messages[] = 'Message 1'; // automatically assigned key 0 $messages[] = 'Message 2'; // automatically assigned key 1 Is it possible to emulate that in Javascript? I don't want to have to define the number of entries in my array as it can vary. Thanks for helping me out on this very basic js question. -Lyon

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• Adding to the browser user agent string?

  - by stwissel

  I have a plug-in that handles its own url schema (something like mystuf:// ). If a user clicks on such a link when the plug-in isn't installed (s)he gets an ugly error. So I extended my installer to write into the Registry (for Internet Explorer) and the user.js (for Firefox) to ADD a custom string to the user agent string. These additions survive a browser upgrade nicely (Microsoft uses this technique to indicate the presence of the dotNet Framework). Now I need to extend this to Apple Safari and Google Chrome on all supported platforms. To be clear: I'm not looking how to REPLACE the user agent string, but how to amend it with additional information. Any hint?

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• Javascript: Simply change items in another select box?

  - by oni-kun

  I'm developing a registration page and wish to use JS to dynamically choose avatar selection based on gender. Here's what I have so far.. <select name="gender"> <option value="Male">Male </option> <option value="Female">Female </option> </select> And that should update options in this based on gender: <select name="avatar"> <option value="Trainer">Trainer </option> </select> <br /> <img src="images/trainers/male/Trainer.gif" /> I can't wrap my head around example code or concepts, I just need an example of how to fill 2-3 values into the 'avatar' selectbox based on gender, female or male, also how can I make 'Trainer' part of 'Trainer.gif' become dynamic? based on the avatar they choose?

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